protected ShapedQueryExpression TranslateResultSelectorForJoin(
ShapedQueryExpression outer,
LambdaExpression resultSelector,
Expression innerShaper,
Type transparentIdentifierType,
bool innerNullable)
{
if (innerNullable)
{
innerShaper = new EntityShaperNullableMarkingExpressionVisitor().Visit(innerShaper);
}
outer.ShaperExpression = CombineShapers(
outer.QueryExpression,
outer.ShaperExpression,
innerShaper,
transparentIdentifierType);
var transparentIdentifierParameter = Expression.Parameter(transparentIdentifierType);
var newResultSelector = Expression.Lambda(
ReplacingExpressionVisitor.Replace(
resultSelector.Parameters[0], AccessOuterTransparentField(transparentIdentifierType, transparentIdentifierParameter),
resultSelector.Parameters[1], AccessInnerTransparentField(transparentIdentifierType, transparentIdentifierParameter),
resultSelector.Body),
transparentIdentifierParameter);
return(TranslateSelect(outer, newResultSelector));
}
protected virtual ShapedQueryExpression TranslateResultSelectorForJoin(
ShapedQueryExpression outer,
LambdaExpression resultSelector,
Expression innerShaper,
Type transparentIdentifierType,
bool innerNullable)
{
if (innerNullable)
{
innerShaper = new EntityShaperNullableMarkingExpressionVisitor().Visit(innerShaper);
}
outer.ShaperExpression = CombineShapers(
outer.QueryExpression,
outer.ShaperExpression,
innerShaper,
transparentIdentifierType);
var transparentIdentifierParameter = Expression.Parameter(transparentIdentifierType);
Expression original1 = resultSelector.Parameters[0];
Expression replacement1 = AccessOuterTransparentField(transparentIdentifierType, transparentIdentifierParameter);
Expression original2 = resultSelector.Parameters[1];
Expression replacement2 = AccessInnerTransparentField(transparentIdentifierType, transparentIdentifierParameter);
var newResultSelector = Expression.Lambda(
new ReplacingExpressionVisitor(
new Dictionary <Expression, Expression> {
{ original1, replacement1 },
{ original2, replacement2 }
}).Visit(resultSelector.Body),
transparentIdentifierParameter);
return(TranslateSelect(outer, newResultSelector));
}
protected QueryableMethodTranslatingExpressionVisitor(
QueryableMethodTranslatingExpressionVisitorDependencies dependencies,
bool subquery)
{
Dependencies = dependencies;
_subquery = subquery;
_entityShaperNullableMarkingExpressionVisitor = new EntityShaperNullableMarkingExpressionVisitor();
}
protected QueryableMethodTranslatingExpressionVisitor(
[NotNull] QueryableMethodTranslatingExpressionVisitorDependencies dependencies,
bool subquery)
{
Check.NotNull(dependencies, nameof(dependencies));
Dependencies = dependencies;
_subquery = subquery;
_entityShaperNullableMarkingExpressionVisitor = new EntityShaperNullableMarkingExpressionVisitor();
}
